Micro Essential Jr113 pH Paper,Jumbo Refill,pH 0-13

Ph paper, jumbo refill, length 50ft ‘, width 1/2 in, range 0.0 – 13.0 Ph, number of tests 300 ph test pencils, strips, paper, and kit9l411, ph pencil, gives 30-sec. Color match of acid or alkali residue on paper, lumber, concrete, cement, plasterboard, painted and prepainted surfaces, textile, ceramics, and skin. Pkg. Of 3. 8zdp7, ph sticks, give quick 1-dip single-color match for each ph value. Extra long and wide for ease of use when wearing gloves. Pkg. Of 25.